DE59307696D1 - Process for catalytic exhaust gas cleaning with improved cold start behavior - Google Patents

Process for catalytic exhaust gas cleaning with improved cold start behavior

Info

Publication number: DE59307696D1
Authority: DE; Germany
Prior art keywords: exhaust gas; cold start; gas cleaning; improved cold; catalytic exhaust
Prior art date: 1992-08-10
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired - Fee Related

Application number

DE59307696T

Other languages

German (de)

Inventor

Dieter Dr Lindner

Egbert Dr Lox

Bernd Dr Engler

Klaus Ostgathe

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Umicore AG and Co KG

Original Assignee

Degussa GmbH

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1992-08-10

Filing date

1993-08-05

Publication date

1998-01-02

1993-08-05 Application filed by Degussa GmbH filed Critical Degussa GmbH

1993-08-05 Priority to DE59307696T priority Critical patent/DE59307696D1/en

1998-01-02 Application granted granted Critical

1998-01-02 Publication of DE59307696D1 publication Critical patent/DE59307696D1/en

2013-08-06 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0835—Hydrocarbons
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/101—Three-way catalysts
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2250/00—Combinations of different methods of purification
- F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2370/00—Selection of materials for exhaust purification
- F01N2370/22—Selection of materials for exhaust purification used in non-catalytic purification apparatus
- F01N2370/24—Zeolitic material
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Combustion & Propulsion (AREA)
General Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Oil, Petroleum & Natural Gas (AREA)
General Chemical & Material Sciences (AREA)
Analytical Chemistry (AREA)
Health & Medical Sciences (AREA)
Materials Engineering (AREA)
Toxicology (AREA)
Biomedical Technology (AREA)
Environmental & Geological Engineering (AREA)
Exhaust Gas After Treatment (AREA)
Catalysts (AREA)
Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Exhaust Gas Treatment By Means Of Catalyst (AREA)

DE59307696T 1992-08-10 1993-08-05 Process for catalytic exhaust gas cleaning with improved cold start behavior Expired - Fee Related DE59307696D1 (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
DE59307696T DE59307696D1 (en)	1992-08-10	1993-08-05	Process for catalytic exhaust gas cleaning with improved cold start behavior

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4226394A DE4226394C2 (en)	1992-08-10	1992-08-10	Process for catalytic exhaust gas cleaning with improved cold start behavior
DE59307696T DE59307696D1 (en)	1992-08-10	1993-08-05	Process for catalytic exhaust gas cleaning with improved cold start behavior

Publications (1)

Publication Number	Publication Date
DE59307696D1 true DE59307696D1 (en)	1998-01-02

Family

ID=6465212

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
DE4226394A Expired - Lifetime DE4226394C2 (en)	1992-08-10	1992-08-10	Process for catalytic exhaust gas cleaning with improved cold start behavior
DE59307696T Expired - Fee Related DE59307696D1 (en)	1992-08-10	1993-08-05	Process for catalytic exhaust gas cleaning with improved cold start behavior

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
DE4226394A Expired - Lifetime DE4226394C2 (en)	1992-08-10	1992-08-10	Process for catalytic exhaust gas cleaning with improved cold start behavior

Country Status (22)

Country	Link
EP (1)	EP0582971B1 (en)
JP (1)	JP3484205B2 (en)
KR (1)	KR100280284B1 (en)
CN (1)	CN1084611A (en)
AR (1)	AR247829A1 (en)
AT (1)	ATE160295T1 (en)
AU (1)	AU664911B2 (en)
BR (1)	BR9303319A (en)
CA (1)	CA2103647C (en)
CZ (1)	CZ288953B6 (en)
DE (2)	DE4226394C2 (en)
DK (1)	DK0582971T3 (en)
ES (1)	ES2109401T3 (en)
FI (1)	FI104750B (en)
HU (1)	HU212759B (en)
MX (1)	MX9304814A (en)
NO (1)	NO304584B1 (en)
PL (1)	PL177656B1 (en)
TR (1)	TR27986A (en)
TW (1)	TW322428B (en)
UA (1)	UA27233C2 (en)
ZA (1)	ZA935775B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4239875C2 (en) *	1992-11-27	1999-02-11	Degussa	Exhaust gas purification system to reduce hydrocarbon emissions during the cold start of internal combustion engines
JP3526084B2 (en) *	1993-12-28	2004-05-10	日本碍子株式会社	Adsorption / catalyst for exhaust gas purification, adsorbent, exhaust gas purification system and exhaust gas purification method
JP3516718B2 (en) *	1994-07-05	2004-04-05	日本碍子株式会社	Exhaust gas purification catalyst-adsorbent and exhaust gas purification method
US6667018B2 (en)	1994-07-05	2003-12-23	Ngk Insulators, Ltd.	Catalyst-adsorbent for purification of exhaust gases and method for purification of exhaust gases
EP0716877A1 (en) *	1994-12-13	1996-06-19	Johnson Matthey Public Limited Company	Catalytic purification of engine exhaust gas
DE19614540A1 (en) *	1996-04-12	1997-10-16	Degussa	Diesel catalyst
EP0944424B1 (en) *	1996-08-19	2003-07-16	Volkswagen Aktiengesellschaft	SPARK-IGNITED INTERNAL COMBUSTION ENGINE WITH AN NOx-ADSORBER
JP3417309B2 (en) *	1997-10-28	2003-06-16	トヨタ自動車株式会社	Hydrocarbon adsorbent
DE19814132A1 (en) *	1998-03-30	1999-10-14	Emitec Emissionstechnologie	Honeycomb body with adsorber material, especially for a hydrocarbon trap
WO1999056859A1 (en) *	1998-05-07	1999-11-11	Engelhard Corporation	Catalyzed hydrocarbon trap and method using the same
JP3772583B2 (en) *	1998-06-01	2006-05-10	日産自動車株式会社	Exhaust gas purification device for internal combustion engine
GB0003405D0 (en)	2000-02-15	2000-04-05	Johnson Matthey Plc	Improvements in emissions control
JP4642978B2 (en)	2000-08-08	2011-03-02	株式会社キャタラー	Exhaust gas purification catalyst
EP2322267B1 (en) *	2002-02-01	2017-08-23	Cataler Corporation	Catalyst for purifying exhaust gases
US7084086B2 (en)	2002-02-01	2006-08-01	Cataler Corporation	Catalyst for purifying exhaust gases
DE102009007765A1 (en) *	2009-02-06	2010-08-12	Daimler Ag	Method for operating an internal combustion engine with an exhaust gas purification system comprising an SCR catalytic converter
DE102009007764A1 (en) *	2009-02-06	2010-08-12	Daimler Ag	Method for operating an internal combustion engine with an emission control system
DE102009060290A1 (en) *	2009-12-23	2011-06-30	Volkswagen AG, 38440	Exhaust gas cleaning in gasoline engines with direct injection using adsorbers with Partikelabscheidefunktion
DE102013210270A1 (en)	2013-06-03	2014-12-04	Umicore Ag & Co. Kg	three-way
US9446395B2 (en) *	2014-02-19	2016-09-20	Ford Global Technologies, Llc	Low temperature catalyst/hydrocarbon trap
DE102014204682A1 (en)	2014-03-13	2015-10-01	Umicore Ag & Co. Kg	Catalyst system for reducing noxious gases from gasoline internal combustion engines
EP3313570B1 (en)	2015-06-29	2021-06-02	Corning Incorporated	Porous ceramic body to reduce emissions
RO134399B1 (en)	2019-01-30	2024-04-30	Mihai Suta	Process for additivation of combustion in spark-ignition engines, composition, device and method for carrying out the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0615016B2 (en) *	1988-09-09	1994-03-02	トヨタ自動車株式会社	Automotive exhaust gas purification device
JPH03141816A (en) *	1989-10-27	1991-06-17	Toyota Motor Corp	Exhaust gas purifier
JPH0724575Y2 (en) *	1989-12-12	1995-06-05	ニチアス株式会社	Exhaust gas purification device for internal combustion engine
DE4003939A1 (en) *	1990-02-09	1991-08-14	Degussa	Noble metal alumina catalyst contg. oxide promoter for gas purificn. - doped with base metal for cold start property and resistance to lean gas
DE4008789C2 (en) *	1990-03-19	1993-12-16	Schatz Oskar	Method and device for treating exhaust gases from internal combustion engines
US5125231A (en) *	1990-06-08	1992-06-30	Corning Incorporated	Dual converter engine exhaust system for reducing hydrocarbon emissions
US5078979A (en) *	1990-07-20	1992-01-07	Uop	Molecular sieve bed/catalyst to treat automotive exhaust
US5051244A (en) *	1990-07-20	1991-09-24	Uop	Use of a molecular sieve bed to minimize emissions during cold start of internal combustion engines

1992
- 1992-08-10 DE DE4226394A patent/DE4226394C2/en not_active Expired - Lifetime
1993
- 1993-07-03 TW TW082105307A patent/TW322428B/zh active
- 1993-07-27 CZ CZ19931517A patent/CZ288953B6/en not_active IP Right Cessation
- 1993-08-02 TR TR00674/93A patent/TR27986A/en unknown
- 1993-08-05 ES ES93112553T patent/ES2109401T3/en not_active Expired - Lifetime
- 1993-08-05 DE DE59307696T patent/DE59307696D1/en not_active Expired - Fee Related
- 1993-08-05 DK DK93112553.8T patent/DK0582971T3/en active
- 1993-08-05 AT AT93112553T patent/ATE160295T1/en not_active IP Right Cessation
- 1993-08-05 EP EP93112553A patent/EP0582971B1/en not_active Expired - Lifetime
- 1993-08-06 UA UA93002235A patent/UA27233C2/en unknown
- 1993-08-09 ZA ZA935775A patent/ZA935775B/en unknown
- 1993-08-09 CN CN93116238A patent/CN1084611A/en active Pending
- 1993-08-09 BR BR9303319A patent/BR9303319A/en not_active IP Right Cessation
- 1993-08-09 AU AU44537/93A patent/AU664911B2/en not_active Ceased
- 1993-08-09 HU HU9302303A patent/HU212759B/en not_active IP Right Cessation
- 1993-08-09 FI FI933511A patent/FI104750B/en active
- 1993-08-09 CA CA002103647A patent/CA2103647C/en not_active Expired - Fee Related
- 1993-08-09 JP JP19722093A patent/JP3484205B2/en not_active Expired - Lifetime
- 1993-08-09 KR KR1019930015388A patent/KR100280284B1/en not_active IP Right Cessation
- 1993-08-09 PL PL93300013A patent/PL177656B1/en unknown
- 1993-08-09 MX MX9304814A patent/MX9304814A/en not_active IP Right Cessation
- 1993-08-09 NO NO932831A patent/NO304584B1/en not_active IP Right Cessation
- 1993-08-10 AR AR93325657A patent/AR247829A1/en active

Also Published As

Publication number	Publication date
AU664911B2 (en)	1995-12-07
UA27233C2 (en)	2000-08-15
NO932831L (en)	1994-02-11
TR27986A (en)	1995-11-07
HU9302303D0 (en)	1993-10-28
AR247829A1 (en)	1995-04-28
DE4226394C2 (en)	1999-01-21
HUT67715A (en)	1995-04-28
DK0582971T3 (en)	1998-03-30
DE4226394A1 (en)	1994-02-17
ATE160295T1 (en)	1997-12-15
KR940003601A (en)	1994-03-12
CN1084611A (en)	1994-03-30
CZ288953B6 (en)	2001-10-17
TW322428B (en)	1997-12-11
KR100280284B1 (en)	2001-02-01
ES2109401T3 (en)	1998-01-16
JPH06154538A (en)	1994-06-03
EP0582971A1 (en)	1994-02-16
ZA935775B (en)	1994-03-08
FI933511A0 (en)	1993-08-09
PL177656B1 (en)	1999-12-31
MX9304814A (en)	1994-05-31
CA2103647C (en)	1999-03-23
AU4453793A (en)	1994-02-17
BR9303319A (en)	1994-03-08
NO932831D0 (en)	1993-08-09
EP0582971B1 (en)	1997-11-19
FI933511L (en)	1994-02-11
CA2103647A1 (en)	1994-02-11
FI104750B (en)	2000-03-31
JP3484205B2 (en)	2004-01-06
CZ151793A3 (en)	1994-10-19
HU212759B (en)	1996-11-28
PL300013A1 (en)	1994-02-21
NO304584B1 (en)	1999-01-18

Publication	Publication Date	Title
DE59307696D1 (en)	1998-01-02	Process for catalytic exhaust gas cleaning with improved cold start behavior
DE59500615D1 (en)	1997-10-16	Processes for cleaning combustion exhaust gases
DE69518994D1 (en)	2000-11-09	Exhaust gas cleaning process
DE69427602D1 (en)	2001-08-09	Exhaust gas purification process
DE59510832D1 (en)	2003-12-24	Process for the catalytic purification of exhaust gases
DE69618357D1 (en)	2002-02-14	Processes for the purification of combustion gases
DE19581135T1 (en)	1996-11-21	Combustion gas purification system and method
DE69328235D1 (en)	2000-05-04	Method and device for cleaning exhaust gas
DE69635641D1 (en)	2006-02-02	Process for cleaning engine exhaust
DE59007453D1 (en)	1994-11-17	Process for the reduction of nitrogen oxides contained in exhaust gases.
DE69204830D1 (en)	1995-10-19	Exhaust gas purification catalyst and process.
DE69416650D1 (en)	1999-04-01	EXHAUST GAS PURIFICATION CARRIER AND METHOD FOR PRODUCING THE SAME
DE69402390D1 (en)	1997-05-07	Exhaust gas catalyst and process
DE69316058D1 (en)	1998-02-12	Exhaust gas purification process
DE69519115D1 (en)	2000-11-23	Exhaust gas catalyst and process
DE69816509D1 (en)	2003-08-28	Exhaust gas treatment process
DE59203876D1 (en)	1995-11-09	Process for the selective catalytic reduction of exhaust gases from automotive diesel engines.
DE69118825D1 (en)	1996-05-23	Process for the catalytic purification of exhaust gases
DE69838589D1 (en)	2007-11-29	METHOD FOR EXHAUST GAS CLEANING
DE69315522D1 (en)	1998-01-15	Metallic catalyst carrier for exhaust gas cleaning
DE69312635D1 (en)	1997-09-04	Process for cleaning harmful gas
DE69226710D1 (en)	1998-09-24	Exhaust gas purification process
DE59707900D1 (en)	2002-09-12	Process for exhaust gas purification in diesel engines
DE69520532D1 (en)	2001-05-10	Device for cleaning engine exhaust gases
DE69519243D1 (en)	2000-12-07	Process and catalyst for the purification of NOx-containing exhaust gases

Legal Events

Date	Code	Title	Description
1998-12-17	8364	No opposition during term of opposition
1999-11-04	8327	Change in the person/name/address of the patent owner	Owner name: DEGUSSA-HUELS AG, 60311 FRANKFURT, DE
2001-10-25	8327	Change in the person/name/address of the patent owner	Owner name: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG, 60311 FRA
2002-01-10	8327	Change in the person/name/address of the patent owner	Owner name: OMG AG & CO. KG, 63457 HANAU, DE
2003-12-18	8327	Change in the person/name/address of the patent owner	Owner name: UMICORE AG & CO.KG, 63457 HANAU, DE
2008-06-12	8339	Ceased/non-payment of the annual fee